1 Day Delayed

Always been regular with my period. Had 2 misacarriages in 4months. My last miscarriage was January and now my husband and i are working up to get preggy. I already had 2 periods from my last miscarriage and my calendar was accurate with my period. Today should be my first day of menstrual period but didnt happen. Had PT but negative. ? Will try another PT tomorrow until it becomes positive ? fighting!! ? #stayingpositive #justwannashare ?